Input row drivers for programmable logic devices

Details Input row drivers for programmable logic devices Input row drivers for programmable logic devices

1989-10-31

1991-06-25

Hudspeth, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307468, H03K 19177

Patent

active

050270117

ABSTRACT:
Multi-function input pins in a programmable logic device are connected to select circuitry which is programmed at device program time. Output signals generated by one or more output logic macrocells are also connected to such select circuitry. The select circuitry generates a signal which is used to drive a row of the array. If an input pin is used for providing a control signal, it is not connected to the array, and the output circuitry can drive that row of the array with an output signal which it generates, or with an input signal obtained from an associated input/output pin.

REFERENCES:
patent: 4758746 (1988-07-01), Birkner et al.
patent: 4763020 (1988-08-01), Takata et al.
patent: 4789951 (1988-12-01), Birkner et al.
patent: 4879481 (1989-11-01), Pathak et al.
patent: 4896296 (1990-01-01), Turner et al.
patent: 4912345 (1990-03-01), Steele et al.

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